Microhabitat heterogeneity across leaves and flower organs promotes bacterial diversity

FEMS Microbiology Ecology
Robert R Junker, A Keller

Abstract

Eukaryote-associated microbiomes interact with their hosts in multiple manners, thereby affecting the hosts' phenotype, physical condition and behaviour. In plants, bacteria have numerous functions, with variable net effects, both in natural and agricultural systems. However, information about the composition and diversity of the bacterial communities associated with different aboveground plant organs, particularly flowers, is lacking. In addition, the relative effects of microhabitat and environmental conditions on community establishment require further attention. Here, using culture-independent methods, we determine that leaves and three floral microhabitats (nectar, stamina and styles) of Metrosideros polymorpha (Myrtaceae), a tree endemic to Hawai'i, host unique indicator communities composed of relatively abundant bacterial taxa. These indicator communities are accompanied by a large number of ubiquitous or rare bacteria with lower abundances. In our study system, the strong effect of microhabitat filtering on plant-associated community composition and bacterial richness and diversity strongly exceeds the influence of environmental effects such as precipitation, altitude, substrate age and geographic distance. Thus, the b...Continue Reading

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Citations

Nov 15, 2017·Journal of Chemical Ecology·Carola HelletsgruberRobert R Junker
Jun 8, 2018·FEMS Microbiology Ecology·Binoy Ambika ManirajanSylvia Schnell
Aug 28, 2018·Journal of Applied Microbiology·Sarah AllardShirley A Micallef
Oct 30, 2018·FEMS Microbiology Ecology·Anna Voulgari-KokotaA Keller
Mar 29, 2019·Nature·Marcell K PetersIngolf Steffan-Dewenter
Mar 29, 2019·PeerJ·Anthony S AmendPaul P Riley
Oct 19, 2019·Ecology and Evolution·Anna Voulgari-KokotaA Keller
Jan 11, 2020·Fungal biology and biotechnology·Joon KlapsSergio Álvarez-Pérez
Aug 24, 2019·The New Phytologist·María Rebolleda-GómezTia-Lynn Ashman
Oct 24, 2020·Current Genomics·Minaxi SharmaPratishtha Gupta

Related Concepts

RNA, Ribosomal, 16S
Plant Leaves
Myrtaceae
Plant Carpals
Pollination
Plant Nectar
Microbiota (plant)
Attention
Environment
Reproduction

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